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| Order | Family | English Common Name | Spanish Common Name | Portuguese Common Name | Scientific Name | Belonging | Records | Conservation status | Notes | ||
| 1 | Anseriformes | Anatidae | Coscoroba Swan | Coscoroba | Capororoca | Coscoroba coscoroba | Native | 1 |
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| 2 | Black-necked Swan | Cisne Cuello Negro | Cisne-de-pescoço-preto | Cygnus melancoryphus | Native | 1 |
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| 3 | Podicipediformes | Podicipedidae | Great Grebe | Macá Grande | Mergulhao-grande o chorona | Podiceps major | Native | 1 |
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| 4 | Piciformes | Picidae | Striped Woodpecker | Carpintero Bataraz Grande | Veniliornis lignarius | Native | 1 |
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| 5 | Passeriformes | Thraupidae | Grassland Yellow Finch | Misto | Tipio | Sicalis luteola | Native | 1 |
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